Backpack Information
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The backpack is also counted by weight, at the beginning, you will have a either 6 by 6 or something else of room, and everything including equipments takes ONE space. And not only does the room affect how much you can carry, the carrying weight also is a big factor. Sorry I have no clue about how do you calculate the carry weight, but every time you add one more stat to those that increases your carrying weight, you increases the carrying weight by a random number from 1~5(or something else...) I believe so is the decreasing... but more chances of getting minus 5.